WGN-TV, virtual channel 9, is a CW-affiliated television station in Chicago, Illinois. It was built, signed on, and owned by the Tribune Company. WGN-TV is one of several flagship properties owned by the Tribune Company, which also owns radio station WGN (720 AM) and publishes the Chicago Tribune, whose slogan (“World Greatest Newspaper”) was the bases for the call letters used by both stations.
WGN-TV began test broadcasts in February 1948 and began regular programming on April 5th. The station was affiliated with the CBS and DuMont networks, but as a sidebar to the February 1953 merger of ABC and United Paramount Theatres, channel 9 lost its CBS affiliation. WGN-TV soon became one of DuMont's strongest affiliates before becoming an independent. On December 3rd, 1993 The Warner Brothers Television signed an affiliation agreement with WGN-TV, making Channel 9 a network affiliate for the first time since 1956.Taken from Wikipedia Programs from WGN, collected in Maryland.